Vibrational spectra and elastic, piezoelectric, and magnetoelectric properties of HoFe3(BO3)4 and HoAl3(BO3)4 crystals

被引：27
作者：
Zinenko, V. I. [1 ]
Pavlovskii, M. S. [1 ]
Krylov, A. S. [1 ]
Gudim, I. A. [1 ]
Eremin, E. V. [1 ]
机构：
[1] Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
来源：
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2013年 / 117卷 / 06期
基金：
俄罗斯基础研究基金会;
关键词：
MAGNETOELASTIC PROPERTIES; SINGLE-CRYSTALS; FERROBORATE;
D O I：
10.1134/S1063776113140203
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Raman spectra of light are obtained for HoFe3(BO3)(4) and HoAl3(BO3)(4) crystals at various temperatures and are used for determining the frequencies of crystal lattice vibrations at the center of the Brillouin zone. It is also found that the HoFe3(BO3)(4) crystal exhibits a phase transition at T (c) a parts per thousand 366 K. The magnetoelectric effect in the paramagnetic phase of these compounds is studied experimentally. The lattice vibration frequencies, elastic and piezoelectric moduli, Born dynamic charges, and the high-frequency permittivity are calculated using the density functional method. A peculiar behavior of the transverse acoustic vibration branch is observed in the I" -> Z direction of the Brillouin zone of the HoFe3(BO3)(4) crystal. The electric polarization induced by an external field is estimated using the calculated values of piezoelectric moduli and experimental values of magnetostriction.
引用
收藏
页码：1032 / 1041
页数：10
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